Control system and method for controlling unfolding and folding of arm frame, and concrete pumping equipment

Abstract

The invention discloses a control system and method for controlling unfolding and folding of an arm frame. The arm frame comprises a plurality of arm sections and a driving mechanism for driving each arm section to move, wherein the control system comprises a detecting unit, a judging unit and a control unit. The control method comprises the detecting step, the judging step and the control step. In the detecting step, the movement process of folding or unfolding of the arm sections is detected; in the judging step, whether the folding or unfolding movement of the arm section is to be in place is judged according to the detected movement process; and in the control step, when the folding or unfolding of the arm sections is to be in place soon, the driving mechanism is automatically controlled to reduce the moving speed of the arm sections. The invention also discloses concrete pumping equipment using the control system provided by the invention. In the control system and the control method provided by the invention, the corresponding arm section can be controlled in time to reduce the movement speed by judging whether the arm section is to be in place, so that the mutual interference among the arm sections is avoided, and the stability and the safety are enhanced.

Description

Technical field [0001] The invention relates to the field of control of boom expansion and retraction, in particular to a control system and method for controlling boom expansion and retraction, and a concrete pumping equipment using the control system, especially a concrete pumping truck. Background technique [0002] Concrete pumping equipment, such as a concrete pump truck, is a special machine with a boom for conveying and pouring concrete. It can be equipped with a special pipeline on the boom to continuously deliver concrete along the pipeline to the pouring site, especially In the construction process of high-rise buildings, underground buildings and large concrete buildings, with its advantages of high quality, high efficiency, low consumption, low cost, short construction period, and low labor intensity, it has gradually become an indispensable key to construction equipment. [0003] At present, concrete pumping equipment based on concrete pump trucks has the development ...

AI Technical Summary

Problems solved by technology

Among them, when the two adjacent boom sections are close to being retracted or unfolded in place, due to the inertia of the boom and the operation of the remote control, the structural members of the recovered two adjacent boom sections will collide and impact, and the deployed boom will In place, the connection parts such as the oil cylinder and the pin shaft between the two adjacent boom sections also have the impact of oil cylinder pressure oil, which causes the whole boom to shake.

Such an impact will cause the boom and the body of the pump truck to shake violently, which will affect the stability of the whole vehicle and the life of the structural parts of the boom

[0005] And under normal circumstances, when the operator operates the recovery and deployment process of the boom, the remote control will be turned to the maximum, that is, the input current of the driving mechanism of the boom will reach the maximum. Since the boom is long and the structural parts are large, The operator cannot judge whether the boom is in place when recovering and unfolding. If the operator does not slow down the movement speed of the boom when the corresponding boom is about to be in place, the boom will be recovered due to the large inertia of the boom. When the adjacent boom sections collide violently with each other, when the cylinder is deployed, the hydraulic impact of the oil cylinder is large, resulting in a large impact on structural parts such as the boom cylinder and the pin shaft, thus affecting the stability of the vehicle

Images